why buying high and selling low?

[sammiches]

So far I've just left them stock, so:

feeMaker = 0.25
feeTaker = 0.25
feeUsing = 'maker'
slippage = 0.05

[simulationBalance]
asset = 1
currency = 100

with some more testing (RSI with very low setting but very high thresholds) I can get gekko to plot long/short "advice" very well, it looks like it should be working, but for some reason %100 of trades fail.